you can't mate :(
No, Boomer Smoker and Hunter Only I'm afraid.
Add z_spawn Witch into the console and spam 100 times.
in the first left 4 dead the infected where the spitter, smoker, hunter, tank, witch, hord
4 players can play in Left 4 Dead 2.
The witch, the charger doesn't stand a chance.
Left 4 Dead can be played on either PC or Xbox 360.
snipe kill from a distance
Because she doesn't want to be a zombie.
You have to download Steam on your computer, then Left 4 Dead 2 can be bought from that.
Yes, you can play left 4 dead 2 on steam if you buy from Gamestop.
No. In Left 4 Dead 2 there are no bosses. Witches will spawn in random places on your map usually 1-2 per part.
One can definitely play Left 4 Dead on their own. But it is more enjoyable when other people are dying along with you. :)